I'm new to driving, and even newer to CB's. Got my first CB 2 days ago, a 29ltd. I'm using factory international antenna and coax and it seem to be doing OK. Question is, do I need to switch my CB off before turning off my truck? When I turn truck key to "off" position, it cuts power to the CB. Should I be turning the CB off before cutting power to it? I know a lot of electronics should be powered off before cutting power to them to prevent damage, is a CB one of those devices I should do this for?